The process of determining what a user is allowed to do after they've been identified.
Authorization answers the question "What are you allowed to do?" — as opposed to Authentication, which answers "Who are you?"
Once a user is authenticated (logged in), authorization determines their Permissions: which pages they can visit, which data they can see, and which actions they can take. For example, a logged-in user might be authorized to edit their own posts but not other users' posts.
In Supabase, authorization is often enforced through Row Level Security policies at the database level. This means even if someone bypasses your Frontend checks, the Database itself will reject unauthorized actions.
Common authorization patterns include role-based access (admin vs. regular user) and ownership-based access (you can only edit YOUR data).
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